Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp2536606imu; Mon, 17 Dec 2018 03:46:30 -0800 (PST) X-Google-Smtp-Source: AFSGD/XXzaujWnMnEDCsEc4iRmcixCmRxkweVHFBa250JqNmr65fOQQC4MKjzBJv3pTmgiyI8do8 X-Received: by 2002:a63:1560:: with SMTP id 32mr11650022pgv.383.1545047190207; Mon, 17 Dec 2018 03:46:30 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1545047190; cv=none; d=google.com; s=arc-20160816; b=CFLg35G5DLrd8sJ2bIST9OQWZVhlpr0gWKLrDTxx0t4i+pNIgmgkOb5DZg16A+S6NP M33VArRWEeiXu9FulDS6acQiZjssbBDsjA+Xm+g7n6NNWFo6+yzcutZ7RASS/vPVhe/M z1KWbYGXh5Jha2ZRt+N4+O63jMySnYeXyjs/wNYlaEjYkp8O1jZl0K+EXmUAuRg4ukrr AptZCgV9f1GLw2d76n9TnON0JSF041Z69PU46/JK55TxOZeJUIKGVpqaosPAOZYMTN/S E6sEWAulNQ2OwZKJFqyv1VTbs7OwcmbbcBc5nlRpVsfMKT+/ZbLXPnkFFQLDA2e/5tsE YVIw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=PjsiObtDfUXcjaIyam0IPbm4exHPg7b34CIMIqWdmUA=; b=YwM7lNUG9SLsCpim17ZQJ9DU5BgKr2Uo5bhf0d+oIgR2kQKbz2mNOH637f4QIHqLtG X/QBQcjeIpLdozvCo94KYG0Et2rOUUymx7pRQ6OMjprm2Gc0/EQjX5ljGpNAwVs8BPLa J6kMJFD50Ivx/RIjN8HXf4VHQRlqhA4fp5OKkP02yK1+R4fp78pdYIlwqv8dF27l1Y3w sT2xcnzrF/WKHZrX9K9sRjLTWZTN6qUgiYQBpSLq4WqoISp6p1ymP0xq4mEBhcZ1RVgD 02YPdCW0LR7rHZYLNtyDg6jIIwwZhyqn2CwmoSVV52YDqn1AAkZz8ucuSu8PfT0snp8W S0ZQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k7si10533133pgm.462.2018.12.17.03.46.15; Mon, 17 Dec 2018 03:46:30 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732366AbeLQLny (ORCPT + 99 others); Mon, 17 Dec 2018 06:43:54 -0500 Received: from mx2.suse.de ([195.135.220.15]:55092 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726949AbeLQLnx (ORCPT ); Mon, 17 Dec 2018 06:43:53 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 15032ACE3; Mon, 17 Dec 2018 11:43:52 +0000 (UTC) Date: Mon, 17 Dec 2018 12:43:51 +0100 (CET) From: Miroslav Benes To: Nicholas Mc Guire cc: Josh Poimboeuf , Jessica Yu , Jiri Kosina , Petr Mladek , live-patching@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] livepatch: check kzalloc return values In-Reply-To: <1544806570-21299-2-git-send-email-hofrat@osadl.org> Message-ID: References: <1544806570-21299-1-git-send-email-hofrat@osadl.org> <1544806570-21299-2-git-send-email-hofrat@osadl.org> User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 14 Dec 2018, Nicholas Mc Guire wrote: > kzalloc() return should always be checked - notably in example code > where this may be seen as reference. On failure of allocation in > livepatch_fix1_dummy_alloc() respectively dummy_alloc() previous > allocation is freed (thanks to Petr Mladek for > catching this) and NULL returned. > > Signed-off-by: Nicholas Mc Guire > Fixes: 439e7271dc2b ("livepatch: introduce shadow variable API") Acked-by: Miroslav Benes M